TWM623223U - connection device - Google Patents

Abstract

A connection device, comprising two receiving parts spaced apart from each other along an axis direction, a corrugated pipe made of metal material and disposed between the receiving parts along the axis direction, two along the axis direction respectively fixed to the The adapter flanges on the outer side of the receiving parts, and a plurality of tie rods arranged in a ring shape along the circumferential direction of the adapter flanges are spaced apart from each other. The corrugated tube includes a plurality of bending sections which are mutually connected and can be stretched and contracted along the axis direction, and two extension sections extending outward from the two outermost bending sections. Each pull rod extends along the axis direction, and two ends are respectively fixed on the adapter flanges. The bellows can expand and contract along the axial direction, so as to absorb the deformation of the pipe fittings in the axial direction, and has the advantages of corrosion resistance, high temperature resistance and pressure resistance.

Description

connection device

The new model relates to a connecting device, in particular to a connecting device for connecting pipe fittings.

Fiber-reinforced plastic (FRP, Fiber-reinforced plastic) pipe fittings are made of resin and glass fiber as raw materials, and are made by cross-winding process, which has the advantages of high structural strength and corrosion resistance of the pipe wall. When connecting different pipe fittings, it is necessary to join these pipe fittings through a connecting device. Since these pipe fittings will encounter thermal expansion and cold contraction, pipeline pulling, strong water pressure, etc., the pipe fittings are often radially and In addition, when the pipe fittings are exposed to the sun or the environment is low temperature and cause thermal expansion and cold contraction, the pipe fittings will expand and contract. Usually, a connecting device is used to connect the two side pipe fittings to absorb the thermal expansion and cooling between the pipe fittings. It reduces the amount of deformation caused by shrinkage, and achieves the effect of tightly connecting the pipe fittings without leakage.

From the above, it can be seen that the connecting device should have high strength, corrosion resistance, and can effectively absorb the expansion and contraction between the two pipe fittings. The current practice is to set up a U-shape of the same material as the pipe fittings and connecting the pipe fittings at both ends. connector, by means of two U-shaped connectors Since the two sides are coaxial with the pipe fittings, even if the pipe fittings expand and contract axially, the U-shaped connecting piece will move along with it without causing damage, which can indeed effectively absorb the expansion and contraction between the two pipe fittings. However, the U-shaped connector cannot connect the pipes along the same axis, the space required for installation is large, and another intermediate support structure is required to maintain, and it does not have the ability to withstand high-frequency vibration. When the pipes are installed When near the pump, these U-shaped connectors may be damaged due to high-frequency vibration, so there is still much room for improvement in this connection method.

Therefore, the purpose of the present invention is to provide a connecting device capable of absorbing displacement vibration, high durability and long service life.

Therefore, the novel connecting device comprises two coaxially spaced coaxially disposed receiving members along an axis, a corrugated tube made of metal material and disposed between the receiving members along the axis, two bellows along the axis The adapter flanges are respectively fixed on the outer sides of the receiving parts, and a plurality of tie rods are arranged annularly at intervals along the circumferential direction of the adapter flanges. The bellows includes a plurality of bending sections which are connected to each other and can expand and contract along the axis direction, and two extension sections extending outward from the two outermost bending sections to contact the receiving parts respectively. Each pull rod extends along the axis direction, and two ends are respectively fixed on the adapter flanges.

The effect of the new model is that the corrugated pipe can expand and contract along the axis direction, so as to absorb the deformation of the pipe fittings in the axis direction, and can connect the pipes coaxially. The pipe fittings greatly reduce the space required for installation, without the need for additional support structures to maintain, and have the ability to withstand high-frequency vibration. In addition, the bellows is made of metal, which has the advantages of corrosion resistance, high temperature resistance and pressure resistance. Therefore, durability and service life can be improved. Not only that, the corrugated tube made of metal also has better strength, which can overcome the conventional problems.

1: Receiver

11: End tube

12: Fixed ring piece

2: Bellows

21: Bending segment

22: Extension

3: interlayer sheet

4: Adapter flange

41: main body

42: Inner edge

43: Outer edge

5: Pull rod

51: Gusset

52: Rod body

53: Spherical Washer

6: Gasket

7: Mask

A: Axis direction

B: hatching

Other features and effects of the present invention will be clearly shown in the embodiments with reference to the drawings, wherein: FIG. 1 is a side cross-sectional view illustrating an embodiment of the new connecting device; and FIG. 2 is a front cross-sectional view. Fig. 1 illustrates a frontal cross-sectional view viewed from the BB section line in Fig. 1, wherein Fig. 2 does not show the plurality of rods and the plurality of spherical washers.

Referring to FIGS. 1 and 2 , an embodiment of the novel connecting device includes two coaxially disposed receiving members 1 spaced apart from each other along an axis direction A, and a connecting member 1 disposed between the receiving members 1 along the axial direction A. The bellows 2 and 2 respectively abut against the outer side of the receiving members 1 along the axial direction A and the ring-shaped interlayer sheets 3 and 2 respectively abut against the outer side of the interlayer sheets 3 along the axial direction A and are connected to the socket. The adapter flanges 4 that are fixedly connected to the element 1, eight tie rods 5 arranged in a ring shape at an interval along the circumferential direction of the adapter flanges 4, a plurality of tie rods arranged on the adapter flanges 4 and the tie rods 5 , and a cover 7 which is fixed on one of the receiving parts 1 and surrounds the bellows 2 in the circumferential direction to shield the bellows 2 . In this embodiment, The receiving parts 1 , the bellows 2 , and the adapter flanges 4 are coaxially arranged along the axis direction A.

Each receiving member 1 includes a set of end pipes 11 disposed on the bellows 2 , and a fixing ring piece 12 surrounding the end pipes 11 and fixed to the corresponding adapter flange 4 by means of screw locking. The two ends of the end pipe 11 in the axial direction A are in contact with the corrugated pipe 2 and the interlayer sheet 3 respectively, and the fixing ring sheet 12 is fixed on the outer peripheral surface of the end pipe 11 by welding, and the outer side By leaning against the interlayer sheet 3, this fixing method enables the end tube 11 and the fixing ring sheet 12 to be in contact with the interlayer sheet 3 evenly, so as to avoid gaps between the fixing ring sheet 12 and the interlayer sheet 3 In order to prevent the fixed ring piece 12 from being deformed due to the aforementioned gap under repeated use, the corrosive fluid will enter the gap generated by the deformation and cause corrosion damage. In the present embodiment, the end pipe 11 which is located on the inner side and thus requires high corrosion resistance is made of Inconel 625 alloy (Inconel 625) or titanium alloy, and is located on the outer side and does not require relatively high corrosion resistance. The ring piece 12 is made of SUS316 stainless steel. In this configuration, the receiving member 1 does not need to be entirely made of Inconel 625 alloy or titanium alloy, thereby reducing the manufacturing cost and maintaining sufficient corrosion resistance.

The bellows 2 includes a plurality of bending sections 21 connected to each other along the axis direction A, and two extending sections 22 extending outward from the two outermost bending sections 21 to contact the end pipes 11 respectively. Each extension section 22 is sleeved by the corresponding end tube 11 , and a portion of the bent section 21 connecting the extension section 22 also abuts against the end tube 11 . In this embodiment, the bellows 2 is made of Inconel 625 alloy. The bent sections 21 can be It expands and contracts in the axial direction A, and has the advantages of corrosion resistance, high temperature resistance, and pressure resistance. Each interlayer piece 3 is sandwiched between the corresponding receiving part 1 and the corresponding adapter flange 4 along the axial direction A, and is in contact with the end tube 11 and the fixing ring piece 12 of the corresponding receiving part 1 flatly. . In this embodiment, the interlayer sheet 3 is made of polytetrafluoroethylene (Polytetrafluoroethylene, abbreviated as PTFE, commonly known as Teflon).

Each adapter flange 4 includes a main body portion 41 extending along the axial direction A, an inner edge portion 42 extending annularly from the main body portion 41 to the outside in the circumferential direction and in contact with the corresponding interlayer sheet 3, and a The main body portion 41 is an outer end edge portion 43 that extends annularly outward in the circumferential direction and is spaced apart from the inner end edge portion 42 along the axial direction A. As shown in FIG. In this embodiment, the adapter flange 4 is made of fiber-reinforced plastic (FRP, Fiber-reinforced plastic), and the outer edge portion 43 can be connected to the pipe through a screw lock. The outer edge portions 43 of the adapter flanges 4 can be respectively connected with two different pipe fittings (not shown), so that the two pipe fittings can communicate with each other.

Each tie rod 5 includes two gussets 51 respectively fixed on the inner edge portions 42 by means of screw locking, and a gusset 51 which penetrates through the gussets 51 along the axial direction A and is fixed to the gussets 51 . The upper rod body 52 and four spherical washers 53 which are penetrated by the rod body 52 and abut against the gussets 51 . Each gusset 51 is located on the outer side of the corresponding inner edge portion 42, and is fixed together with the inner edge portion 42, the corresponding fixing ring piece 12, and the corresponding washer 6 through the same bolt. In the embodiment, the gusset 51 is made of SUS316 stainless steel. The spherical washers 53 correspond to the isometric braces in pairs. 51, the two spherical washers 53 of each group are located on the inner and outer sides of the corresponding gusset plate 51 along the axis direction A, respectively. The spherical washers 53 are deformed by the force along the axis direction A, and generate a restoring force through their own hemispherical structure, thereby resisting the vibration along the axis direction A, and increasing the tightening and anti-loosening ability. The tie rods 5 can have a limiting effect to avoid excessive axial displacement between the connected pipes.

In this embodiment, the spacers 6 are made of Inconel 625 alloy, and each spacer 6 is located between the corresponding gusset 51 and the corresponding inner edge portion 42 , and is connected to the gusset 51 . , The inner edge portion 42 and the corresponding fixing ring piece 12 are fixed together by the same bolt. The gasket 6 can increase the equivalent thickness to avoid damage to the glass fiber reinforced plastic surfaces of the adapter flanges 4 due to scratches or stress concentration during the tightening process of the aforementioned bolts. The cover 7 is fixed on the outer peripheral surface of the end tube 11 of one of the receiving parts 1 , and covers the bending sections 21 along the circumferential direction, so as to protect the corrugated tube 2 .

To sum up, the present invention can achieve the limiting effect and absorb the axial displacement through the tie rods 5, and the bellows 2 has flexibility, can absorb vibration, and is in the axial direction A due to the sun exposure and other reasons. The amount of deformation generated, each receiving piece 1 welds the fixing ring piece 12 made of SUS316 stainless steel to the end pipe 11 made of Inconel 625 alloy or titanium alloy, which can reduce the cost while considering the corrosion resistance. And it can touch the corresponding interlayer sheet 3 flatly, so as to avoid the deformation of the fixing ring sheet 12 under repeated use, so it can indeed achieve the purpose of the present invention.

However, the above are only examples of the present invention, and should not be To limit the scope of implementation of this new model, all simple equivalent changes and modifications made according to the scope of the patent application for this new model and the contents of the patent specification are still within the scope of this new model patent.

1: Receiver

11: End tube

12: Fixed ring piece

2: Bellows

21: Bending segment

22: Extension

3: interlayer sheet

4: Adapter flange

41: main body

42: Inner edge

43: Outer edge

5: Pull rod

51: Gusset

52: Rod body

53: Spherical Washer

6: Gasket

7: Mask

A: Axis direction

B: hatching

Claims (10)

A connection device comprising: Two receiving parts, coaxially arranged along an axis direction spaced apart from each other; A bellows tube is made of metal material and disposed between the receiving parts along the axis direction. The bellows tube includes a plurality of bending sections that are connected to each other and can be stretched and contracted along the axis direction, and two outermost two the bending sections extend outward to contact the extending sections of the receiving members respectively; Two adapter flanges, respectively fixed on the outer sides of the receiving parts along the axial direction; and A plurality of tie rods are arranged annularly at intervals along the circumferential direction of the adapter flanges, each tie rod extends along the axis direction, and both ends are respectively fixed on the adapter flanges. The connection device of claim 1, wherein the bellows is made of Inconel 625 alloy. The connecting device as claimed in claim 1, wherein each receiving member comprises a set of end pipes arranged on the corresponding extending sections of the corrugated pipe, and an end pipe surrounding the end pipe and fixed to the corresponding adaptor in a screw lock manner. Equipped with a fixing ring piece on the flange, the fixing ring piece is fixed on the outer peripheral surface of the end pipe by welding. The connecting device according to claim 3, wherein the end tube of each receiving member is made of Inconel 625 alloy or titanium alloy, and the fixing ring is made of SUS316 stainless steel. The connecting device according to claim 3, further comprising two interlayer sheets sandwiched between the receiving parts and the adapter flanges, each interlayer sheet is in contact with the end pipe and the fixing part of the corresponding receiving part The ring piece is screwed between the receiving piece and the corresponding adapter flange. The connecting device of claim 5, wherein the interlayer sheets are made of polytetrafluoroethylene. The connecting device according to claim 5, wherein each pull rod comprises two gusset plates respectively fixed on the adapter flanges by means of screw locking, and one gusset plate is passed through the gusset plates along the axis direction and fixed The rods on the gussets, and a plurality of spherical washers which are penetrated by the rods and abut against the gussets. The connecting device according to claim 7, wherein each adapter flange comprises a main body portion extending along the axis direction, an inner end edge extending from the main body portion in a circumferential direction outward and in contact with the corresponding interlayer sheet part, and an outer end edge part which extends annularly outward from the main body part in the circumferential direction and is spaced apart from the inner end edge part in the axial direction; Equally fit the gaskets between the flanges, each gasket is located between the corresponding gusset plate and the corresponding inner end edge. The connecting device as claimed in claim 8, each gasket is made of SUS316 stainless steel. The connecting device according to claim 1, further comprising a cover fixed on one of the receiving parts and surrounding and shielding the bellows.

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